Synthesis and Characterization of New Copper (II) Complexes with mixed ligand of Heterocyclic Dithiocarbamates and 4-picoline,luitidine ,en,(1- 10)phen,pph_3

New copper (ii) complexes containing mixed ligands of the general formula [cu(4- hydrpipdtc)_2l_2] and [cu(4-methylpipdtc)_2l_2], where (4-hydrpipdtc), (4-methylpipdtc)=4-hydroxylpiperidinedithiocarbamate , 4-methylpiperidinedithiocarbamate respectively and l= 4-picoline ,luitidine ,en ,(1-10)phen,pph_3 , have been prepared and characterized by elemental analyses ,conductivity , infrared ,electronic spectra and susceptibility measurements . from the obtained data a square planar geometry was suggested for the bis (dithiocarbamato) copper (ii) complex and octahedral geometry for the others has been suggested.